package thread;

public class SyncDemo4 {
    public static void main(String[] args) {
        Foo foo = new Foo();
        Thread t1 = new Thread(){
            public void run(){
                foo.methodA();
            }
        };
        Thread t2 = new Thread(){
            public void run(){
                foo.methodB();
            }
        };
        t1.start();
        t2.start();

    }
}
class Foo {
    public synchronized void methodA(){
        try {
            Thread t = Thread.currentThread();
            System.out.println(t.getName()+"正在执行A方法...");
            Thread.sleep(2000);
            System.out.println(t.getName()+"A方法执行完毕");
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
    public synchronized void methodB(){
        try {
            Thread t = Thread.currentThread();
            System.out.println(t.getName()+"正在执行B方法...");
            Thread.sleep(2000);
            System.out.println(t.getName()+"B方法执行完毕");
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}